Refactor file structure and update README instructions.

Moved `PracticeFactory.py` to `handlers/PracticeHandler.py` with class renaming for clarity. Adjusted `score.py` location to `scoring/score.py`. Added a motivational message to each problem section in the README to enhance user experience.

Author: nicholasadamou

README.md

@@ -71,6 +71,7 @@ Selected 📅 Daily Challenge Mode
 🏷️ Tags: Array, Breadth-First Search, Heap (Priority Queue), Matrix
 📈 Acceptance Rate: 55.04%
 ...
+⏳ You have 45 min minutes to solve the problem. Good luck!
 ```
 
 ### Random Problem Mode
@@ -96,6 +97,7 @@ Selected 🎲 Random Problem Mode
 🏷️ Tags: Database
 📈 Acceptance Rate: 61.29%
 ...
+⏳ You have 45 min minutes to solve the problem. Good luck!
 ```
 
 ### Custom Mode
@@ -120,6 +122,7 @@ Selected 🧩 Custom Practice Mode
 🏷️ Tags: Array, Hash Table
 📈 Acceptance Rate: 54.67%
 ...
+⏳ You have 45 min minutes to solve the problem. Good luck!
 ```
 
 ### Study Plan Mode
@@ -144,6 +147,7 @@ Selected 🎯 Study Plan Mode: top-interview-150
 🏷️ Tags: Array, Matrix, Simulation
 📈 Acceptance Rate: 70.65%
 ...
+⏳ You have 45 min minutes to solve the problem. Good luck!
 ```
 
 ## Configurations

PracticeFactory.py renamed to handlers/PracticeHandler.py

@@ -209,7 +209,7 @@ def handle(self, args):
             log(f"Failed to fetch random problem: {str(e)}", LogLevel.ERROR)
 
 
-class PracticeModeFactory:
+class PracticeModeHandler:
     @staticmethod
     def get_mode(selection_mode: str) -> PracticeMode:
         if selection_mode == "random":